Single sleeve valve engine



June 11, 1935. a. L. GILBERT SINGLE SLEEVE VALVE ENGINE Original FiledNov. 20, 1935 4 Sheets-Sheet 1 INVENTOR June 11, 1935. a. L. GILBERTSINGLE SLEEVE VALVE ENGINE Original Filed Nov. 20, 1953 4 Sheets-Sheet 2[dam/"d4. 67/6 6/? INVENTOR M f mm.

N TE RE V an Lv W u is E L G N I 5 June 11, 1935;

Original Filed Nov. 20, 19 4 Sheets-sheaf, 3

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June 11, 1935. I E. L. GILBERT ,0 4, 3

smsma SLEEVE VALVE ENGINE 4 Sheets$heet 4 Original Filed Nov. 20, 195:5

BY J" I I, V

ATTORNEY Patented June 11, 1935 f iir STATES PATENT oFFrcEf SINGLESLEEVE VALVEWENGINE Edward Leslie Gilbert, Fort Bayard, N. Mex.

n Application 1 Claim This invention relates to single sleeve valvengines and isan improvement over the type. 9 engine set forth in my U.S. Letters Patent granted arch 4, 1930 and numbered 1,749,701 and hasfor the primary object the provision of a simplified sleeve operatingmechanism which reduces the number of parts and permits the cylinders ofthe engine to be arranged in closer relation, consequently permitting ashorter crank shaft to be employed and materially reduces end thrustsfrom the sleeves of the cylinder and provides a quieter operatingengine.

With these and other objects in view this invention consists in certainnovel features of construction, combination and arrangement of parts tobe hereinafter more fully described and claimed.

For a complete understanding of my invention, reference is to be had tothe following description and accompanying drawings, in which Figure 1is a side elevation illustrating an engine with improved sleeve valvesand showing the compactness of the engine.

Figure 2 is a transverse sectional view taken on the line 22 of Figure 1showing the operating mechanism for the sleeve valve.

Figure 3 is a fragmentary horizontal sectional view showing the sleevevalves and their operating mechanisms.

Figure 4 is a detail sectional view taken on the line 4 =i of Figure 1.

Figure 5 is a side elevation partly in section illustrating one of thesleeve valves.

Figure 6 is an end elevation illustrating the same.

Figure 7 is a plan view illustrating an attaching ring employed upon thesleeve valve.

Figure 8 is a perspective view illustrating a guide for the attachingring.

Figure 9 is a plan view illustrating one of the eccentric straps andshowing a part of the valve operating means as forming an integral partthereof.

Figure 10 is an end elevation illustrating the same.

Figure 11 is a fragmentary plan view illustrating a cam shaft.

Referring in detail to the drawings, the numeral 1 indicates thecylinders of the engine mounted to a base 2 provided with a crank case3. The cylinders are suitably water-jacketed and equipped with removableheads 4 each provided with a depending portion 5 extending into acylinder and spaced from the walls of the latter to form a guide for theupper end of a sleeve valve 6. The cylinders are provided with in-N0vember-20, 1923, Serial No.- 698,908

Renewed May 7, 1935 take and exhaust ports 1 of substantially-tn.mounted in spark plug openings Hi formed in the depending portions 5for igniting the fuel within the cylinders. Pistons H are reciprocallymounted in the cylinders with the sleeve valves interposed between thepistons and the walls of the cylinders. A crank shaft I2 is journaled inbearings carried by the motor base and are connected to the pistons I]by connecting walls l3. The sleeve valves extend below the lower ends ofthe cylinders into the base 2 and are provided adjacent their lower endswith annular grooves M to receive valve operating means IS.

The foregoing description sets forth broadly the type of engine formingthe subject matter of my patent heretofore. referred to. r

A cam shaft l6 driven from the crank shaft is journaled to the base 2and is located at one side of the crank shaft and in a plane slightlyabove the latter and has formed integrally therewith cams IT. The camsare designed for actuating the valve latter each include a sleeve-likeelement I B journaled upon its respective cam and has formed integrallytherewith an upwardly directed arm 19 pivoted to spaced ears 20 formedon one side of an annular member 2| fitted within the groove It.

of the sleevevalve and the latter by being so connected to the camreceives during the rotation of the cam reciprocatory movement forcontrolling the intake and exhaust ports 1 of the respective cylinder.The member 2| opposite to the ears 20 is provided with a guide lug 22slidable between the forked portion 23 of a guide 24 depending from thetop wall of the base 2.

The sleeve-like member l8 mounted upon the cam is provided with a guidelug 25 operating between a forked portion'26 of 21 and the latter issecured to the top wall and one of the side walls of the base 2.

Extending laterally from the lower end of each of the sleeve valves is alug 28 to which is journaled one end of a connecting arm 29, theopposite end of which is offset downwardly and pivoted to spaced ears 30formed on the sleeve-like member l8. The connecting arm 29 includesintermediate and end sections and said sections are pivotally connected,as shown mm. between the sections are reversely arranged to each otherso as to cooperate in forming a universal construction within theconnecting arm.

The pivots a depending guide During the movement of the sleeve-likemember l8 by its respective cam will oscillate the sleeve valve whichwith the reciprocation of the latter will effectively control the intakeand exhaust ports of the cylinder.

The valve operating means having thus been described, it will-be seenthat besides efficiently operating the sleeve valve it consists of aminimum number of parts and that the parts are so designed that theoperation of the sleeve .valve will be carried out with quietness andeificiency besides the guides provided in the mechanism will resist endthrusts developed by the sleeve valve consequently renderingsuccessfulxop'eration of the engine over a longer period of timve andfurther with the present valve operating mechanism permits the cylindersof the .engineto beratranged in closer relation and thereby permit theuse of a shorter crank shaft as well as; a shorter cam shaft. Havingdescribedthe invention, I- claim:-

An internal combustion engine including a base carrying .a cylinderhaving intake and exhaust ports and an ignition means for said cylintheconnecting arm 29 der, a sleeve valve having 'intakeand exhaust f portsslidably and rotatably mounted in the cylinder for controlling theintake and exhaust ports of said cylinder, a piston slidable in saidsleeve, a crank shaft journaled' to the base, means connecting thepiston to the crank shaft, a cam shaft journaled to the base and drivenfrom the crank shaft, an eccentric on the cam shaft, a sleevelike memberjournaled on the eccentric of the cam shaft, an arm, integralwith thesleeve-like member, an annular member rotatablysecured to the sleevevalve and pivoted to's'aid-arm whereby said sleeve valve may, bereciprocated by the rotation of the cam shaft, a'lug carried by theisleeve valve; a connecting arm journaled to said lugand pivoted to thesleeve-like member and including a universal construction within itselfto impart oscillatory, movement to the valve sleeve during the lattersreciprocal movement, a 3, guide secured to the base, aguide lug ontheannular member and received by the guide, a second guide carried by thebase, and'a-second guide lug upon the sleeve-like member and received bythe second-named guide: r

EDWARD LESLIE' GILBERT. 1

